📄 s12_mscan.h
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/**** MOTOROLA INTERNAL USE ONLY ****
Copyright (c) Motorola 2002
File Name : $RCSfile: s12_mscan.h,v $
Current Revision : $Revision: 1.1 $
Defines the S12 msCAN module register block as a datastructure
msCAN datastructure base address (out of reset) -
MCSDP256 : (CAN0) 0x0140, (CAN1) 0x0180, (CAN2) 0x01C0,
(CAN3) 0x0200, (CAN4) 0x0280
The datastructure used is determined by the #define's MCSDP256, MCSxxx, etc.
These definitions can be found in "s12_common.h".
Written by Martyn Gallop (R32151)
Revision history -
9/5/00 - Initial coding based on HC12 mscan.h by Ross McLuckie
10/5/00 - Updated transmitter registers comments
- Changed #include <s12_common.h> to #include "s12_common.h"
- corrected type name tCANRIER (was incorrectly tCANRFLG)
26/7/00 - added time stamp registers to tTXBUF & tRXBUF buffer structures
- corrected spelling of SPLAK to SLPAK in tCANCTL1 definition
- split idam :2 into idam0 & idam1 bits in tCANIDAC definition
2/8/00 - replaced missing #define
3/8/00 - corrected spelling of rxfie & ovrie in CANRIER definition
as per the spec.
4/4/02 - Rev 1.1 Added individual bit definitions to tCANTFLG, tCANTIER,
tCANTARQ, tCANTAAK and tCANTBSEL.
Defined error state values
#include "mottypes.h" instead of "s12_common.h"
****/
#ifndef S12_MSCAN_H /*prevent duplicated includes */
#define S12_MSCAN_H
//#ifndef MOTTYPES_H /*prevent duplicated includes */
//#include "mottypes.h"
//#endif
typedef union uCANCTL0
{
tU08 byte;
struct
{
tU08 initrq :1; /*initialization mode request */
tU08 slprq :1; /*sleep mode request */
tU08 wupe :1; /*wake-up enable */
tU08 time :1; /*time stamp enable */
tU08 synch :1; /*synchronized status */
tU08 cswai :1; /*msCAN stops in wait mode */
tU08 rxact :1; /*receiver active status */
tU08 rxfrm :1; /*frame recieved flag */
}bit;
}tCANCTL0;
#define INITRQ 0x01 /*bit masks */
#define SLPRQ 0x02
#define WUPE 0x04
#define TIME 0x08
#define SYNCH 0x10
#define CSWAI 0x20
#define RXACT 0x40
#define RXFRM 0x80
typedef union uCANCTL1
{
tU08 byte;
struct
{
tU08 initak :1; /*initialization mode acknowledge */
tU08 slpak :1; /*sleep mode acknowledge*/
tU08 wupm :1; /*wake-up mode low pass filter */
tU08 :1; /*not used */
tU08 listen :1; /*listen only mode */
tU08 loopb :1; /*loop back self test mode */
tU08 clksrc :1; /*msCAN clock source */
tU08 cane :1; /*msCAN enabled */
}bit;
}tCANCTL1;
#define INITAK 0x01 /*bit masks */
#define SLPAK 0x02
#define WUPM 0x04
#define LISTEN 0x10
#define LOOPB 0x20
#define CLKSRC 0x40
#define CANE 0x80
typedef union uCANBTR0
{
tU08 byte;
struct
{
tU08 brp :6; /*baud rate prescaler */
tU08 sjw :2; /*synchronization jump width */
}bit;
}tCANBTR0;
#define BRP0 0x01 /*bit masks */
#define BRP1 0x02
#define BRP2 0x04
#define BRP3 0x08
#define BRP4 0x10
#define BRP5 0x20
#define SJW0 0x40
#define SJW1 0x80
typedef union uCANBTR1
{
tU08 byte;
struct
{
tU08 tseg1 :4; /*time segment bits */
tU08 tseg2 :3;
tU08 samp :1; /*sample rate (0:1 per bit;1:3 per bit) */
}bit;
}tCANBTR1;
#define TSEG10 0x01 /*bit masks */
#define TSEG11 0x02
#define TSEG12 0x04
#define TSEG13 0x08
#define TSEG20 0x10
#define TSEG21 0x20
#define TSEG22 0x40
#define SAMP 0x80
typedef union uCANRFLG
{
tU08 byte;
struct
{
tU08 rxf :1; /*receive buffer full flag */
tU08 ovrif :1; /*overrun flag */
tU08 tstat :2; /*transmitter status bits */
tU08 rstat :2; /*receiver status bits */
tU08 cscif :1; /*status change interrupt flag */
tU08 wupif :1; /*wake-up flag */
}bit;
}tCANRFLG;
#define RXF 0x01 /*bit masks */
#define OVRIF 0x02
#define TSTAT0 0x04
#define TSTAT1 0x08
#define RSTAT0 0x10
#define RSTAT1 0x20
#define CSCIF 0x40
#define WUPIF 0x80
#define RXOK 0 /* error states */
#define RXWRN 1
#define RXERR 2
#define TXOK 0
#define TXWRN 1
#define TXERR 2
#define BUSOFF 3
typedef union uCANRIER
{
tU08 byte;
struct
{
tU08 rxfie :1; /*receiver full interrupt enable */
tU08 ovrie :1; /*overrun interrupt enable */
tU08 tstate :2; /*transmitter status change enable */
tU08 rstate :2; /*receiver status change enable */
tU08 cscie :1; /*status change interrupt enable */
tU08 wupie :1; /*wake-up interrupt enable */
}bit;
}tCANRIER;
#define RXFIE 0x01 /*bit masks */
#define OVRIE 0x02
#define TSTATE0 0x04
#define TSTATE1 0x08
#define RSTATE0 0x10
#define RSTATE1 0x20
#define CSCIE 0x40
#define WUPIE 0x80
typedef union uCANTFLG
{
tU08 byte;
struct
{
tU08 txe0 :1; /*transmitter buffer 0 empty flag */
tU08 txe1 :1; /*transmitter buffer 1 empty flag */
tU08 txe2 :1; /*transmitter buffer 2 empty flag */
tU08 :5; /*not used */
}bit;
}tCANTFLG;
#define TXE0 0x01 /*bit masks */
#define TXE1 0x02
#define TXE2 0x04
typedef union uCANTIER
{
tU08 byte;
struct
{
tU08 txeie0 :1; /*transmitter buffer 0 empty interrupt enable */
tU08 txeie1 :1; /*transmitter buffer 1 empty interrupt enable */
tU08 txeie2 :1; /*transmitter buffer 2 empty interrupt enable */
tU08 :5; /*not used */
}bit;
}tCANTIER;
#define TXEIE0 0x01 /*bit masks */
#define TXEIE1 0x02
#define TXEIE2 0x04
typedef union uCANTARQ
{
tU08 byte;
struct
{
tU08 abtrq0 :1; /*transmitter buffer 0 abort request */
tU08 abtrq1 :1; /*transmitter buffer 1 abort request */
tU08 abtrq2 :1; /*transmitter buffer 2 abort request */
tU08 :5; /*not used */
}bit;
}tCANTARQ;
#define ABTRQ0 0x01
#define ABTRQ1 0x02
#define ABTRQ2 0x04
typedef union uCANTAAK
{
tU08 byte;
struct
{
tU08 abtak0 :1; /*transmitter buffer 0 abort acknowledge */
tU08 abtak1 :1; /*transmitter buffer 1 abort acknowledge */
tU08 abtak2 :1; /*transmitter buffer 2 abort acknowledge */
tU08 :5; /*not used */
}bit;
}tCANTAAK;
#define ABTAK0 0x01
#define ABTAK1 0x02
#define ABTAK2 0x04
typedef union uCANTBSEL
{
tU08 byte;
struct
{
tU08 tx0 :1; /*transmitter buffer 0 select */
tU08 tx1 :1; /*transmitter buffer 1 select */
tU08 tx2 :1; /*transmitter buffer 2 select */
tU08 :5; /*not used */
}bit;
}tCANTBSEL;
#define TX0 0x01
#define TX1 0x02
#define TX2 0x04
typedef union uCANIDAC
{
tU08 byte;
struct
{
tU08 idhit :3; /*identifier acceptance hit indicator */
tU08 :1; /*not used */
tU08 idam0 :1; /*identifier acceptance mode, set = 4 x 16-bit*/
tU08 idam1 :1; /*identifier acceptance mode, set = 8 x 8-bit*/
/*both cleared = 1 x 32 bit */
/*both set = filter closed */
tU08 :2; /*not used */
}bit;
}tCANIDAC;
#define IDHIT0 0x01 /*bit masks */
#define IDHIT1 0x02
#define IDHIT2 0x04
#define IDAM0 0x10
#define IDAM1 0x20
typedef union uCANID
{
tU32 l;
tU16 w[2];
tU08 b[4];
}tCANID;
typedef struct
{
tCANID canidar;
tCANID canidmr;
}tCID;
typedef struct
{
tCANID id; /*message id */
tU08 dsr[8]; /*8 x data bytes */
tU08 dlr; /*data length value */
tU08 rsv; /*not used */
tU16 tsr; /*time stamp register */
}tRXBUF;
typedef struct
{
tCANID id; /*message id */
tU08 dsr[8]; /*8 x data bytes */
tU08 dlr; /*data length value */
tU08 tbpr; /*transmit buffer priority */
tU16 tsr; /*time stamp register */
}tTXBUF;
typedef struct
{
volatile tCANCTL0 canctl0; /*control register 0 */
tCANCTL1 canctl1; /*control register 1 */
tCANBTR0 canbtr0; /*bus timing register 0 */
tCANBTR1 canbtr1; /*bus timing register 1 */
volatile tCANRFLG canrflg; /*receiver flag register */
tCANRIER canrier; /*receiver interrupt enable register */
volatile tCANTFLG cantflg; /*transmitter flag register */
tCANTIER cantier; /*transmitter interrupt enable register */
tCANTARQ cantarq; /*transmitter message abort control register */
volatile tCANTAAK cantaak; /*transmitter message abort flag register */
volatile tCANTBSEL cantbsel; /*transmitter buffer select */
volatile tCANIDAC canidac; /*identifier acceptance control register */
tU08 rsv[2]; /*reserved */
volatile tU08 canrxerr; /*receive error counter */
volatile tU08 cantxerr; /*transmit error counter */
tCID canid[2]; /*identifier acceptance/mask registers */
volatile tRXBUF rxbuf; /*foreground receive buffer */
volatile tTXBUF txbuf; /*foreground transmit buffer */
}tMSCAN;
#endif /*S12_MSCAN_H */⌨️ 快捷键说明
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